document.write( "Question 628445: Solve the following system of equation using ADDITION to eliminate one variable. If the system has no solution, indicate that it is inconsistent; if it has infinite solutions, indicate that it is dependent, if the system has one solution, Check the Answer.\r
\n" ); document.write( "\n" ); document.write( "-y=2x
\n" ); document.write( "3x+y=20 \n" ); document.write( "
Algebra.Com's Answer #395617 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
): Solve the following system of equation using ADDITION to eliminate one variable. If the system has no solution, indicate that it is inconsistent; if it has infinite solutions, indicate that it is dependent, if the system has one solution, Check the Answer.
\n" ); document.write( "-y=2x
\n" ); document.write( "3x+y=20
\n" ); document.write( "------Rearrange:
\n" ); document.write( "2x+y = 0
\n" ); document.write( "3x+y = 20
\n" ); document.write( "---
\n" ); document.write( "Subtract to get:
\n" ); document.write( "x = 20
\n" ); document.write( "---
\n" ); document.write( "solve for \"y\":
\n" ); document.write( "y = -2x
\n" ); document.write( "y = -40
\n" ); document.write( "----
\n" ); document.write( "One solution: System is independent; system is consistent
\n" ); document.write( "===============
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "=============== \n" ); document.write( "
\n" );